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Lateralized and bilateral sensory mechanisms independently regulate sociability and social preference in Drosophila
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DOI：10.3389/fnbeh.2026.1745784.png)
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Abstract
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Social behavior involves sociability—the drive to interact—and social preference—the choice of partners. Using FlySocialer; an automated system for tracking group interactions; we analyzed male Drosophila melanogaster and found highly individualized; non-random social behaviors. Compared to randomized controls; flies showed stable individual differences in sociability and distinct partner preferences. Sociability exhibited a sensory-specific lateralized asymmetry: visual inputs via the left eye modulated interaction number; while olfactory inputs via the left antenna influenced interaction duration. Conversely; neither sensory manipulation exerted a significant effect on social preference. These results reveal distinct mechanisms for sociability and selectivity; highlighting lateralized sensory drive versus bilateral integration as core principles of social behavior in Drosophila.
Keywords:
social preference
sensory integration
lateralization
sociability
social behaviors
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